Abstract #4169
Cartilage assessment in femoroacetabular impingement using Bloch-simulation-based T2 mapping at 3 T: preliminary validation against intra-operative findings
Noam Ben-Eliezer 1,2 , Matthieu Guillemin 1 , Akio Yoshimoto 1 , Kai Tobias Block 1,2 , Roy Davidovitch 3 , Thomas Youm 3 , Robert Meislin 3 , Michael Recht 4 , Daniel K Sodickson 1,2 , and Riccardo Lattanzi 1,2
1
Center for Biomedical Imaging, Department of
Radiology, New York University Medical Center, New York,
NY, United States,
2
Center
for Advanced Imaging Innovation and Research (CAI2R),
Department of Radiology, New York University School of
Medicine, New York, NY, United States,
3
Department
of Orthopedic Surgery, New York University Hospital for
Joint Diseases, New York, NY, United States,
4
Department
of Radiology, New York University Langone Medical
Center, New York, NY, United States
Early diagnosis of articular cartilage defects is
critical to the success of corrective surgical
procedures in patients with femoroacetabular impingement
(
FAI
). Quantitative T
2
mapping
can detect early degeneration of cartilage, but it is
challenging to perform in vivo, mostly due to the
contamination of multi spin-echo protocols by stimulated
and indirect echoes, non-rectangular slice profiles, and
inhomogeneous (B
1
+
) fields. We use
a recently-developed T
2
mapping
technique the echo-modulation curve (
EMC
)
algorithm which is able to overcome these limiting
factors, for retrospective assessment of cartilage
damage in FAI patients, to show increased specificity of
the EMC technique versus conventional mono-exponential
fitting.
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